Mode of roofing houses



WILLIAM DOGKER, OF NEW ORLEANS, LOUISIANA.

MODE 0F ROOFING HOUSES.

Speccation of Letters Patent No. 1,887, dated December 10, 1840.

T0 all /LULOW may concern Be it known that I, WILLIAM Dooinn, now of NewOrleans, State of Louisiana, have `invented a new and improved mode ofroofing in slate, tile, or metal, which improvement may be applied toperpendicular surfaces, and to facing the exterior walls of buildings ofbrick, plaster, or wood, rendering them water-tight; and I do herebydeclare that the following is a full and e-Xact description.

This improvement consists in using instead of the double courses ofslate (which is the present mode of rooting) I use a single coursing',together with certain metallic plates and hydraulic cement vthe wholecombined and prepared so as to make the root light, tight and durable.The metallic plates above mentioned I call intermediates and they bemade ot' sheet iron, tin, Zinc, lead or other metal, four inches or morein breadth according to circumstances and equal in length to the lengthot' the joint of the slates, tiles, or metal sheets used in the rooting.These plates are prepared and coated with paint, or lacquer, or Japanvarnish or oil so as to resist the action of the atmosphere or water.These plates are laid so that the joints of a row of slates or tiles orother material used in rooting shall meet over the center of the plate.The edge ol each slate or tile or metal sheet should be bedded inhydraulic cement or composition calculated to resist the wet, andproduce a drain, andV prevent the slate or tile from coming in contactwith the said intermediate, all of which will be more readily understoodby reference to the drawing.

a, o, a, is a row of slates or tiles or metal sheets say about twentyinches lo-ng and ten broad. b Zv-Z) b-Z) I) Z are the joints or line ofmeeting between them; c, c, C, represent the metallic plates orintermediates about ten inches long by about four or six broad, beddedin hydraulic cement.

The rooting sheets lap four inches vover edges in the usual manner. Theplates or intermediates and the slates or tiles or metal sheets aretacked or nailed to the roof or top by nails under the lap as shown inthe drawing. y

Vhat I claim as my invention and desire to secure by Letters Patent is-Laying the slates, tiles, sheets of metal7 &c., constituting the roofingin hydraulic cement or other waterproof composition, in combination withthe intermediate plat-es, which plates should be covered with paint,varnish, lacquers, &c., in the manner and for the purpose described. j

. IVILLIAM DOCKER.

lVitnesses T. W. COLLINS, L. C. HoRNsBY.

